CN116291620A - End frame coal discharging device - Google Patents
End frame coal discharging device Download PDFInfo
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- CN116291620A CN116291620A CN202310520983.0A CN202310520983A CN116291620A CN 116291620 A CN116291620 A CN 116291620A CN 202310520983 A CN202310520983 A CN 202310520983A CN 116291620 A CN116291620 A CN 116291620A
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- top beam
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- 239000003245 coal Substances 0.000 title claims abstract description 85
- 238000007599 discharging Methods 0.000 title claims abstract description 36
- 238000009434 installation Methods 0.000 claims description 4
- 239000002390 adhesive tape Substances 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000011435 rock Substances 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/54—Details of the ends of props
- E21D15/55—Details of the ends of props of prop heads or feet
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
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- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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- Bridges Or Land Bridges (AREA)
Abstract
The application relates to the technical field of end coal caving of a fully mechanized caving face adhesive tape roadway of a thick coal seam, in particular to an end coal caving device, which comprises two symmetrically distributed top beams and a base positioned below the top beams, wherein front beams and shield beams are respectively arranged on the front side and the rear side of the top beams, and the top beams are connected with the base through telescopic upright post supports; according to the invention, the high-position coal discharging device is additionally arranged on the end frame and the coal discharging operation is implemented, so that the suspended roof area of the rear corner is reduced, the roof can be timely collapsed, and dynamic disasters such as rock burst and the like caused by sudden collapse of the large-area suspended roof are avoided; according to the invention, coal is put at the end of the rubber belt roadway, so that the coal loss in the goaf is reduced, and the natural ignition risk of the coal loss is reduced; according to the invention, the coal is discharged from the end of the adhesive tape roadway, so that the recovery rate of the working face is improved, the resource waste is reduced, and the economic benefit is improved.
Description
Technical Field
The application relates to the technical field of end coal caving of a fully mechanized caving face adhesive tape roadway of a thick coal seam, in particular to an end frame coal caving device.
Background
The middle-set type end support is arranged on two sides of a fully-mechanized roadway, the transfer machines are distributed in the middle, the roadway top plate is supported, and the transfer machines are provided with self-moving force through pushing jacks, so that the middle-set type roadway end hydraulic support device is an important mine device.
The central type roadway end hydraulic support device comprises a roadway end hydraulic support device body with a rear top beam and a rear base, a front top beam, a front base, a front telescopic upright post and a supporting point, wherein the front top beam is connected with the rear top beam and acts on a supporting top plate point, the front base is connected with the rear base and arranged on a supporting foundation point, the front telescopic upright post is arranged between the front top beam and the base and used for lifting the front top beam, the supporting point is supported through the roadway end hydraulic support device body, the supporting area is increased through the front top beam, the front top beam is supported through the front base and the front telescopic upright post, most of central type end supports are not increased to form a single row of upright posts, the base receiving area and the top beam supporting area are small, therefore temporary supporting is not increased independently, the supporting area is increased, and the supporting efficiency is improved.
However, the end of the adhesive tape roadway is a junction point between a working face and a stoping roadway, equipment such as front and rear scraper heads, a reversed loader and the like are arranged tightly, mine pressure is complicated, the condition of a top plate and equipment is always ensured not to recover roadway top coal, but the problems that the top plate of an end goaf is difficult to collapse, the suspended top area is large, residual coal enters an old goaf, spontaneous combustion is easy to occur and the like are also brought, so that a safe and practical method for recovering the top coal of the end of the adhesive tape roadway is needed to be studied urgently.
Disclosure of Invention
In order to solve the technical problem, the application provides a tip frame coal caving device, adopts following technical scheme:
the end support coal-discharging device comprises two symmetrically distributed top beams and a base positioned below the top beams, wherein front beams and shield beams are respectively arranged on the front side and the rear side of the top beams, and the top beams and the base are connected through telescopic upright post supports;
the top beams comprise a front top beam, a middle top beam and a rear top beam which are sequentially distributed along the straight line direction of the roadway, and the front top beam, the middle top beam and the rear top beam are box-shaped structural members;
the base comprises a front base, a middle base and a rear base which are respectively in one-to-one correspondence with the front top beam, the middle top beam and the rear top beam in sequence along the straight line direction of the roadway;
the upright posts comprise a front upright post, a middle upright post and a rear upright post, and base connecting rods are hinged between the front upright post and the middle upright post as well as between the middle upright post and the rear upright post;
a front upright post is connected between the front top beam and the front base, a rear upright post is connected between the rear top beam and the rear base, and two middle upright posts are connected between the middle top beam and the middle base;
the shield beam is rotatably arranged on one side of the rear top beam, which is away from the middle top beam, through the ear seat and the pin shaft, a coal discharging device is arranged on one side of the shield beam, which is towards the rear top beam, and the coal discharging device is arranged at the position of a detached top protection structure on the rear top beam;
the shield beam is in supporting connection with the rear base through a connecting rod assembly; and a front beam jack is connected between the front beam and the front top beam.
Preferably, the coal discharging device comprises a shield beam, a guard plate is arranged on the side, facing the back top beam, of the shield beam, one side, facing the shield beam, of the guard plate is inserted into a guard plate base arranged on the shield beam through a pin shaft, the guard plate and the shield beam are connected with a swing oil cylinder, and two ends of the swing oil cylinder are respectively rotatably arranged on a first fixed seat arranged at the bottom of the guard plate and a second fixed seat arranged at the bottom of the shield beam; and a coal discharging component for further breaking the net and discharging the coal is arranged on the guard plate.
Preferably, the coal discharging assembly comprises a telescopic oil cylinder arranged at the lower end of a guard plate, a groove is formed in one end of the guard plate, which deviates from a shield beam, a telescopic round hole is formed in the bottom of the groove, an extension rod is arranged in the telescopic round hole in a sliding mode, a linkage block is arranged at the output end of the telescopic oil cylinder, the extension rod penetrates through the linkage block and is rotatably arranged on the linkage block, and a skewer plug is arranged on one side of the extension rod, which deviates from the guard plate.
Preferably, a spiral groove is formed in the telescopic round hole, and a matching rod sliding in the spiral groove is arranged on the side wall of one end, away from the cutting head, of the extension rod;
the whole structure that reduces gradually in diameter from the middle part to both sides that is used for cutting head, just a plurality of serration grooves have evenly been seted up to cutting head lateral wall circumference.
Preferably, the connecting rod assembly comprises a front connecting rod and a rear connecting rod, one end of the rear base, which is away from the base connecting rod, is provided with a rod placing frame, one side of the rod placing frame, which is away from the rear base, is inclined from top to bottom, a first rotating shaft is inserted into the rod placing frame along the inclined surface direction of the rod placing frame, the front connecting rod is rotatably arranged on the first rotating shaft at the front end of the rod placing frame, the rear connecting rod is rotatably arranged on the first rotating shaft at the rear end of the rod placing frame, two second rotating shafts which are in one-to-one correspondence with the first rotating shafts are also arranged on the lower surface of the shield beam, the upper end of the front connecting rod is rotatably arranged on the second rotating shaft at the front end of the shield beam, and the upper end of the rear connecting rod is rotatably arranged on the second rotating shaft at the rear end of the shield beam;
and the two shield beams are provided with protection plates on opposite outer side walls so as to further enlarge the protection range.
Preferably, the outer side walls of the front top beam, the middle top beam and the rear top beam are respectively provided with a top beam outer protective top plate, the side walls of the top beam outer protective top plates are provided with a plurality of outer mounting blocks, the outer mounting blocks are rotatably mounted on a first clamping seat arranged on the outer side walls of the front top beam, the middle top beam or the rear top beam through pin shafts, and outer protective top jacks are hinged between the top beam outer protective top plates and the outer side walls of the front top beam, the middle top beam or the rear top beam;
the inner side walls of the front top beam, the middle top beam and the rear top beam are respectively provided with a top beam inner top protection plate, the side walls of the top beam inner top protection plates are provided with a plurality of inner installation blocks, the inner installation blocks are rotatably installed on a second clamping seat arranged on the inner side wall of the front top beam or the middle top beam or the rear top beam through pin shafts, and inner top protection jacks are hinged between the top beam inner top protection plates and the outer side walls of the front top beam or the middle top beam or the rear top beam;
the lower end of the top beam outer top protection plate positioned on the rear top beam is connected with a secondary top protection plate.
Preferably, the front base is provided with a first connecting lug seat, the first connecting lug seat is provided with a lower swing rod through pin shaft rotation, the upper end of the lower swing rod is connected with an upper swing rod through pin shaft rotation, the lower end of the front top beam is provided with a second connecting lug seat, the upper end of the upper swing rod is also provided with the second connecting lug seat through pin shaft rotation, and the connection part of the upper swing rod and the lower swing rod inclines towards the direction deviating from the shield beam.
Preferably, the lower ends of the front top beam, the middle top beam and the rear top beam are respectively provided with an adjusting seat, the adjusting seats are provided with end connectors, and an adjusting jack is connected between the two end connectors along the width direction of the top beams and used for changing the distance between the two top beams; the number of the adjusting jacks positioned below the front top beam and the rear top beam is one, and the number of the adjusting jacks positioned below the middle top beam is two.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the invention, the high-position coal discharging device is additionally arranged on the end frame, and the coal discharging operation is implemented, so that the suspended roof area of the rear corner is reduced, the roof can be timely collapsed, and dynamic disasters such as rock burst and the like caused by sudden collapse of the large-area suspended roof are avoided.
2. According to the invention, coal is put at the end of the rubber belt roadway, so that the coal loss in the goaf is reduced, and the natural ignition risk of the coal loss is reduced.
3. According to the invention, the coal is discharged from the end of the adhesive tape roadway, so that the recovery rate of the working face is improved, the resource waste is reduced, and the economic benefit is improved.
4. According to the invention, the swinging oil cylinder is controlled to drive the guard plate to turn up and down on the shield beam, so that the guard plate knocks on the roof anchor net structure, roof coal is smoothly dropped down, and meanwhile, the roof anchor net structure is damaged by the coal dropping assembly, so that the roof coal dropping efficiency is further improved.
Drawings
Fig. 1 is a schematic view of a first view structure of the present invention.
Fig. 2 is a schematic view of a second view structure of the present invention.
Fig. 3 is an enlarged view of a portion of fig. 2 a of the present invention.
Fig. 4 is an enlarged view of a portion of the invention at B of fig. 2.
Fig. 5 is a schematic view of the structure between the front header, upper swing link, lower swing link and front base of the present invention.
Fig. 6 is a schematic view of the structure of the lower surface of the front header of the present invention.
Fig. 7 is an enlarged view of a portion of fig. 6 at C in accordance with the present invention.
Fig. 8 is a partial enlarged view of the invention at D of fig. 6.
Fig. 9 is a schematic structural view of the connecting rod assembly of the present invention.
Fig. 10 is a schematic view of a first view structure of the coal discharging device of the present invention.
FIG. 11 is a schematic view of a second view angle structure of the coal discharging device of the present invention.
Reference numerals illustrate: 1. a top beam; 2. a base; 3. a front beam; 4. a shield beam; 5. a column; 11. a front top beam; 12. a middle top beam; 13. a rear top beam; 21. a front base; 22. a middle base; 23. a rear base; 51. a front upright; 52. a middle column; 53. a rear pillar; 24. a base connecting rod; 6. a coal discharging device; 7. a connecting rod assembly; 31. front beam jack; 14. a frame adjusting seat; 15. an end connector; 16. a frame adjusting jack; 211. a first connection ear seat; 212. a lower swing rod; 213. the upper swing rod; 214. the second connecting ear seat; 80. a top beam outer protective top plate; 81. an outer mounting block; 82. a first clamping seat; 83. an outer jack; 84. a top beam inner roof guard plate; 85. an inner mounting block; 86. a second clamping seat; 87. an inner jack; 88. a secondary top protection plate; 71. a front link; 72. a rear connecting rod; 73. a rod piece placing rack; 74. a first rotation shaft; 75. a second rotation shaft; 41. a protection plate; 61. a guard board; 62. a guard board base; 63. swinging the oil cylinder; 64. a first fixing seat; 65. the second fixing seat; 66. a coal discharging assembly; 661. a telescopic oil cylinder; 662. a groove; 663. a telescopic round hole; 664. an extension rod; 665. a linkage block; 666. a skewer plug; 6631. a spiral groove; 6641. a mating lever; 6661. and (5) sawing tooth grooves.
Detailed Description
The present application is described in further detail below in conjunction with fig. 1-11.
Referring to fig. 1 to 3, the embodiment of the application discloses an end frame coal discharging device 6, which comprises two symmetrically distributed top beams 1 and a base 2 positioned below the top beams 1, wherein front beams 3 and shield beams 4 are respectively rotatably arranged on the front side and the rear side of the top beams 1, the top beams 1 and the base 2 are in supporting connection through telescopic upright posts 5, the top beams 1 are in direct top plate contact, are main box-shaped structural members for supporting and maintaining a top plate, and the pressure of the top plate can be directly transmitted to the base 2 through the upright posts 5.
The top beam 1 comprises a front top beam 11, a middle top beam 12 and a rear top beam 13 which are sequentially distributed along the straight line direction of a roadway, wherein the front top beam 11, the middle top beam 12 and the rear top beam 13 are box-shaped structural members, the front top beam 11 and the middle top beam 12 are used for maintaining a pedestrian passageway top plate, and the rear frame is used for maintaining an end top plate and implementing coal discharging;
the base 2 comprises a front base 21, a middle base 22 and a rear base 23 which are respectively in one-to-one correspondence with the front top beam 11, the middle top beam 12 and the rear top beam 13 in turn along the roadway linear direction; the upright 5 comprises a front upright 51, a middle upright 52 and a rear upright 53, and a base connecting rod 24 is hinged between the front upright 51 and the middle upright 52 and between the middle upright 52 and the rear upright 53; a front upright post 51 is connected between the front top beam 11 and the front base 21, a rear upright post 53 is connected between the rear top beam 13 and the rear base 23, and two middle upright posts 52 are connected between the middle top beam 12 and the middle base 22;
a front beam jack 31 is connected between the front beam 3 and the front top beam 11; the balance is kept under the action of the front beam jack 31 so as to keep good contact with the top coal and maintain the top coal above the coal mining machine channel, thereby ensuring normal operation of workers and normal operation of the coal mining machine and the front conveyor; wherein the coal mining machine and the front conveyor are both in the prior art, and are not described in detail herein.
The shield beam 4 is rotatably arranged on one side of the rear top beam 13, which is away from the middle top beam 12, through an ear seat and a pin shaft, a coal discharging device 6 is arranged on one side of the shield beam 4, which is towards the rear top beam 13, and the coal discharging device 6 is arranged at the position of a detached top protection structure on the rear top beam 13; the coal discharging device 6 breaks the net and discharges the coal.
The shield beam 4 is in supporting connection with the rear base 23 through a connecting rod assembly 7; the shield beam 4 is used for bearing the pressure of the top plate and transmitting the pressure to the connecting rod assembly 7 and the base 2 through the shield beam 4, and the shield beam 4 bears the effects of torque and bending moment in the transmission process and is also impacted by the falling gangue of the top plate;
the base 2 receives various forces and moments transmitted from the top plate via the uprights 5, shield beams 4, links, etc., and then transmits them to the bottom plate. Besides sufficient strength, the base 2 has good adaptability to the bottom plate, and when the base is stressed, the specific pressure of the front end of the base 2 to the bottom plate is smaller, so that the front end of the base 2 cannot be pressed into the bottom plate, or the structure of the bottom plate is damaged.
Referring to fig. 4, the lower ends of the front top beam 11, the middle top beam 12 and the rear top beam 13 are respectively provided with an adjusting seat 14, the adjusting seats 14 are provided with end connectors 15, and an adjusting jack 16 is connected between the two end connectors 15 along the width direction of the top beams 1 for changing the distance between the two top beams 1; the number of the adjusting jacks 16 below the front top beam 11 and the rear top beam 13 is one, and the number of the adjusting jacks 16 below the middle top beam 12 is two.
Referring to fig. 5, a first connection lug 211 is disposed on the front base 21, a lower swing rod 212 is rotatably mounted on the first connection lug 211 through a pin shaft, an upper swing rod 213 is rotatably connected to the upper end of the lower swing rod 212 through a pin shaft, a second connection lug 214 is mounted on the lower end of the front top beam 11, the upper end of the upper swing rod 213 is rotatably mounted on the second connection lug 214 through a pin shaft, and the connection part of the upper swing rod 213 and the lower swing rod 212 is inclined towards the direction deviating from the shield beam 4.
The invention can ensure the stability of the front top beam 11 through the upper swing rod 213 and the lower swing rod 212, and can transmit the pressure born by the front top beam 11 to the front base 21 through the upper swing rod 213 and the lower swing rod 212, and the front top beam 11 rotates up and down on the left side wall of the middle top beam 12 under the telescopic action of the front upright post 51 and matched with the upper ends of the upper swing rod 213 and the lower swing rod 212.
Referring to fig. 6 to 8, the outer side walls of the front top beam 11, the middle top beam 12 and the rear top beam 13 are provided with top beam outer top protection plates 80, the side walls of the top beam outer top protection plates 80 are provided with a plurality of outer mounting blocks 81, the outer mounting blocks 81 are rotatably mounted on a first clamping seat 82 arranged on the outer side wall of the front top beam 11 or the middle top beam 12 or the rear top beam 13 through pin shafts, and outer top protection jacks 83 are hinged between the top beam outer top protection plates 80 and the outer side walls of the front top beam 11 or the middle top beam 12 or the rear top beam 13;
the inner side walls of the front top beam 11, the middle top beam 12 and the rear top beam 13 are respectively provided with a top beam inner protective top plate 84, the side walls of the top beam inner protective top plates 84 are respectively provided with a plurality of inner mounting blocks 85, the inner mounting blocks 85 are rotatably mounted on second clamping seats 86 arranged on the inner side walls of the front top beam 11, the middle top beam 12 or the rear top beam 13 through pin shafts, and inner protective top jacks 87 are hinged between the top beam inner protective top plates 84 and the outer side walls of the front top beam 11, the middle top beam 12 or the rear top beam 13.
A secondary roof guard plate 88 (shown in fig. 1) is attached to the lower end of the roof outer roof guard plate 80 on the rear roof 13 to further expand the protective range.
The invention drives the top beam outer guard plate 80 to rotate through the outer guard jack 83, and the top beam inner guard plate 84 is driven to rotate through the inner guard jack 87, so that the top beam outer guard plate 80 and the top beam inner guard plate 84 bear the actions of falling gangue and protecting the lower transfer conveyor.
Referring to fig. 9, the link assembly 7 includes a front link 71 and a rear link 72, one end of the rear base 23 facing away from the base connecting rod 24 is provided with a rod placing frame 73, one side of the rod placing frame 73 facing away from the rear base 23 is inclined from top to bottom, the rod placing frame 73 is inserted with a first rotating shaft 74 along the inclined surface direction thereof, the front link 71 is rotatably mounted on the first rotating shaft 74 at the front end of the rod placing frame 73, the rear link 72 is rotatably mounted on the first rotating shaft 74 at the rear end of the rod placing frame 73, the lower surface of the shield beam 4 is also provided with two second rotating shafts 75 in one-to-one correspondence with the first rotating shafts 74, the upper end of the front link 71 is rotatably mounted on the second rotating shaft 75 at the front end of the shield beam 4, and the upper end of the rear link 72 is rotatably mounted on the second rotating shaft 75 at the rear end of the shield beam 4;
the shield beam 4, the front connecting rod 71, the rear connecting rod 72 and the rear top beam 13 are hinged with the rear base 23 to form a complete motion whole, so that the shield beam 4 moves up and down according to a certain lemniscate track, the top control distance of the shield beam 4 is ensured, and meanwhile, the larger horizontal force and lateral force of the shield beam 4 are born, so that the shield beam 4 has torsion resistance.
The two shield beams 4 are provided with protection plates 41 on opposite outer side walls to further expand the protection range.
Referring to fig. 9 to 11, the coal discharging device 6 includes a shield beam 4, a shield plate 61 is disposed on a side facing the back top beam 13, the shield plate 61 is inserted onto a shield plate base 62 disposed on the shield beam 4 through a pin shaft on a side facing the shield beam 4, the shield plate 61 and the shield beam 4 are in supporting connection with a swinging cylinder 63, and two ends of the swinging cylinder 63 are respectively rotatably mounted on a first fixing seat 64 disposed at the bottom of the shield plate 61 and a second fixing seat 65 disposed at the bottom of the shield beam 4; the guard plate 61 is provided with a coal discharging assembly 66 for further breaking the net and discharging the coal.
In a specific implementation process, the swing oil cylinder 63 is controlled to drive the guard plate 61 to turn up and down on the shield beam 4, so that the guard plate 61 knocks on the roof anchor net structure, roof coal is smoothly dropped downwards, and meanwhile, the roof anchor net structure is damaged through the coal dropping assembly 66, so that the roof coal dropping efficiency is further improved.
The coal discharging assembly 66 comprises a telescopic oil cylinder 661 arranged at the lower end of a guard plate 61, a groove 662 is formed in one end of the guard plate 61, which is away from the shield beam 4, a telescopic round hole 663 is formed in the bottom of the groove 662, an extension rod 664 is arranged in the telescopic round hole 663 in a sliding mode, a linkage block 665 is arranged at the output end of the telescopic oil cylinder 661, the extension rod 664 penetrates through the linkage block 665 and is rotatably arranged on the linkage block 665, and a skewer 666 is arranged on one side of the extension rod 664, which is away from the guard plate 61.
In a specific implementation process, when the swing cylinder 63 drives the guard plate 61 to swing up and down, the telescopic cylinder 661 drives the skewer 666 to stretch and cut towards the top plate through the linkage block 665, so as to crush the top coal and enable the top coal to fall down smoothly.
A spiral groove 6631 is formed in the telescopic round hole 663, and a matching rod 6641 sliding in the spiral groove 6631 is arranged on the side wall of one end of the extension rod 664, which is away from the plug 666; when the telescopic cylinder 661 drives the extension rod 664 to slide in the telescopic circular hole 663, the extension rod 664 is limited by the spiral groove 6631 in the telescopic circular hole 663, so that the extension rod 664 is driven to rotate in the telescopic circular hole 663 by sliding the matching rod 6641 in the spiral groove 6631, and further the skewer 666 is driven to synchronously rotate, so that the skewer 666 can be used for rotationally stirring the top coal, and the damage of the skewer 666 to the top coal is improved.
The whole cuttage plug 666 is of a structure with the diameter gradually reduced from the middle part to the two sides, and a plurality of sawtooth grooves 6661 are uniformly formed in the circumferential direction of the side wall of the cuttage plug 666; so that the invention further improves the damage to the top coal by the cuttage head 666, improves the recovery rate of the working face, reduces the resource waste and improves the economic benefit.
The implementation principle of the invention is as follows:
(1): anchor withdrawing operation is carried out at the front frame position of the end frame, so that the active supporting strength of the top plate is weakened; in the advancing process of the end headstock, the front top beam 11 and the middle top beam 12 repeatedly support the top plate, so that the integrity of the coal on the top of the roadway is damaged; the back top beam 13 of the end head frame is provided with a coal discharging device 6 which is designed and processed independently for breaking the net and discharging coal;
(2): controlling the telescopic oil cylinder 661, extending the cuttage head 666 with the saw-tooth grooves 662 in the direction of the top plate in an inclined manner, damaging the anchor net structure of the top plate, and then stretching and retracting the plugboard back and forth to drop the top coal through the guard plate 61;
(3): after the coal is discharged, the coal discharging device 6 and the end head support top beam 1 are adjusted to an initial state, so that further falling of the top plate gangue is prevented, and the purpose of controllable coal discharging of the end head is achieved.
(4): the coal on the tunnel roof is discharged and then falls into the conveyor channel of the transfer conveyor directly, and is transported out through the transfer conveyor and the belt conveyor.
It should be noted that, the reversed loader and the belt conveyor are both in the prior art, and are not described here again; in addition, the roof is a baffle plate at the top of the roadway and is used for blocking roof coal at the top of the roadway from falling accidentally.
In addition, the anchor withdrawing range is a roof anchor beam, a non-pedestrian side steel belt and an anchor cable. The number of the advanced anchor withdrawal rows is dynamically coordinated through the coal cutting footage of the working face and the roof support conditions, so that the phenomenon that the roof is broken in advance due to early anchor withdrawal or roof coal is difficult to discharge due to late anchor withdrawal is avoided.
The embodiments of the present invention are all preferred embodiments of the present invention, and are not intended to limit the scope of the present invention in this way, therefore: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.
Claims (8)
1. The utility model provides a end frame coal caving device (6), includes two symmetrical distribution's back timber (1) and is located base (2) of back timber (1) below, its characterized in that: front beams (3) and shield beams (4) are respectively arranged on the front side and the rear side of the top beam (1), and the top beam (1) is in supporting connection with the base (2) through telescopic upright posts (5);
the top beam (1) comprises a front top beam (11), a middle top beam (12) and a rear top beam (13) which are sequentially distributed along the straight line direction of a roadway, wherein the front top beam (11), the middle top beam (12) and the rear top beam (13) are box-shaped structural members;
the base (2) comprises a front base (21), a middle base (22) and a rear base (23) which are respectively in one-to-one correspondence with the front top beam (11), the middle top beam (12) and the rear top beam (13) in sequence along the straight line direction of the roadway;
the upright post (5) comprises a front upright post (51), a middle upright post (52) and a rear upright post (53), and a base connecting rod (24) is hinged between the front upright post (51) and the middle upright post (52) and between the middle upright post (52) and the rear upright post (53);
a front upright post (51) is connected between the front top beam (11) and the front base (21), a rear upright post (53) is connected between the rear top beam (13) and the rear base (23), and two middle upright posts (52) are connected between the middle top beam (12) and the middle base (22);
the shield beam (4) is rotatably arranged on one side of the rear top beam (13) which is away from the middle top beam (12) through an ear seat and a pin shaft, a coal discharging device (6) is arranged on one side of the shield beam (4) which is towards the rear top beam (13), and the coal discharging device (6) is arranged at the position of a detached top protection structure on the rear top beam (13);
the shield beam (4) is in supporting connection with the rear base (23) through a connecting rod assembly (7); a front beam jack (31) is connected between the front beam (3) and the front top beam (11).
2. An end frame coal caving device (6) according to claim 1, characterized in that: the coal discharging device (6) comprises a shield beam (4), a guard plate (61) is arranged on the side, facing the rear top beam (13), of the shield beam (4), the guard plate (61) is inserted onto a guard plate base (62) arranged on the shield beam (4) through a pin shaft, the guard plate (61) and the shield beam (4) are in support connection with a swinging oil cylinder (63), and two ends of the swinging oil cylinder (63) are respectively rotatably arranged on a first fixed seat (64) arranged at the bottom of the guard plate (61) and a second fixed seat (65) arranged at the bottom of the shield beam (4); a coal discharging component (66) for further breaking the net and discharging the coal is arranged on the guard plate (61).
3. An end frame coal caving device (6) according to claim 2, characterized in that: the coal discharging assembly (66) comprises a telescopic oil cylinder (661) arranged at the lower end of a guard plate (61), a groove (662) is formed in one end of the guard plate (61) deviating from a shield beam (4), a telescopic round hole (663) is formed in the bottom of the groove (662), an extension rod (664) is arranged in the telescopic round hole (663) in a sliding mode, a linkage block (665) is arranged at the output end of the telescopic oil cylinder (661), the extension rod (664) penetrates through the linkage block (665) and is rotatably arranged on the linkage block (665), and a skewer plug (666) is arranged on one side of the extension rod (664) deviating from the guard plate (61).
4. A head frame coal caving device (6) according to claim 3, characterized in that: a spiral groove (6631) is formed in the telescopic round hole (663), and a matching rod (6641) sliding in the spiral groove (6631) is arranged on the side wall of one end, away from the plug (666), of the extension rod (664);
the whole cuttage head (666) is of a structure with the diameter gradually reduced from the middle part to two sides, and a plurality of saw tooth grooves (6661) are uniformly formed in the circumferential direction of the side wall of the cuttage head (666).
5. An end frame coal caving device (6) according to claim 1, characterized in that: the connecting rod assembly (7) comprises a front connecting rod (71) and a rear connecting rod (72), one end of the rear base (23) deviating from the base connecting rod (24) is provided with a rod placing rack (73), one side of the rod placing rack (73) deviating from the rear base (23) is inclined from top to bottom, the rod placing rack (73) is inserted with a first rotating shaft (74) along the inclined surface direction of the rod placing rack, the front connecting rod (71) is rotatably arranged on the first rotating shaft (74) at the front end of the rod placing rack (73), the rear connecting rod (72) is rotatably arranged on the first rotating shaft (74) at the rear end of the rod placing rack (73), two second rotating shafts (75) which are in one-to-one correspondence with the first rotating shafts (74) are also arranged on the lower surface of the shield beam (4), the upper end of the front connecting rod (71) is rotatably arranged on the second rotating shaft (75) at the front end of the shield beam (4), and the upper end of the rear connecting rod (72) is rotatably arranged on the second rotating shaft (75) at the rear end of the shield beam (4).
And the opposite outer side walls of the two shield beams (4) are provided with protection plates (41) so as to further enlarge the protection range.
6. An end frame coal caving device (6) according to claim 1, characterized in that: the outer side walls of the front top beam (11), the middle top beam (12) and the rear top beam (13) are respectively provided with a top beam outer top protection plate (80), the side walls of the top beam outer top protection plates (80) are provided with a plurality of outer mounting blocks (81), the outer mounting blocks (81) are rotatably mounted on a first clamping seat (82) arranged on the outer side wall of the front top beam (11) or the middle top beam (12) or the rear top beam (13) through pin shafts, and outer top protection jacks (83) are hinged between the top beam outer top protection plates (80) and the outer side wall of the front top beam (11) or the middle top beam (12) or the rear top beam (13);
the inner side walls of the front top beam (11), the middle top beam (12) and the rear top beam (13) are respectively provided with a top beam inner top protection plate (84), the side walls of the top beam inner top protection plates (84) are provided with a plurality of inner installation blocks (85), the inner installation blocks (85) are rotatably installed on second clamping seats (86) arranged on the inner side walls of the front top beam (11) or the middle top beam (12) or the rear top beam (13) through pin shafts, and inner top protection jacks (87) are hinged between the top beam inner top protection plates (84) and the outer side walls of the front top beam (11) or the middle top beam (12) or the rear top beam (13);
the lower end of the top beam outer top protection plate (80) positioned on the rear top beam (13) is connected with a secondary top protection plate (88).
7. An end frame coal caving device (6) according to claim 1, characterized in that: be provided with first connection ear seat (211) on preceding base (21), just install down pendulum rod (212) through the round pin axle rotation on first connection ear seat (211), the upper end of pendulum rod (212) is connected with pendulum rod (213) through the round pin axle rotation down, second connection ear seat (214) are installed to preceding back timber (11) lower extreme, install on second connection ear seat (214) through the round pin axle rotation also the upper end of pendulum rod (213), the junction of pendulum rod (213) and lower pendulum rod (212) inclines towards the direction that deviates from shield roof beam (4).
8. An end frame coal caving device (6) according to claim 1, characterized in that: the lower ends of the front top beam (11), the middle top beam (12) and the rear top beam (13) are respectively provided with an adjusting seat (14), the adjusting seats (14) are provided with end connectors (15), and an adjusting jack (16) is connected between the two end connectors (15) along the width direction of the top beams (1) and used for changing the distance between the two top beams (1); the number of the adjusting jacks (16) below the front top beam (11) and the rear top beam (13) is one, and the number of the adjusting jacks (16) below the middle top beam (12) is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310520983.0A CN116291620A (en) | 2023-05-10 | 2023-05-10 | End frame coal discharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310520983.0A CN116291620A (en) | 2023-05-10 | 2023-05-10 | End frame coal discharging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116291620A true CN116291620A (en) | 2023-06-23 |
Family
ID=86796164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310520983.0A Pending CN116291620A (en) | 2023-05-10 | 2023-05-10 | End frame coal discharging device |
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| Country | Link |
|---|---|
| CN (1) | CN116291620A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117588248A (en) * | 2024-01-19 | 2024-02-23 | 阳泉市广凯机械制造有限公司 | Top beam and hydraulic support and use method thereof |
-
2023
- 2023-05-10 CN CN202310520983.0A patent/CN116291620A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117588248A (en) * | 2024-01-19 | 2024-02-23 | 阳泉市广凯机械制造有限公司 | Top beam and hydraulic support and use method thereof |
| CN117588248B (en) * | 2024-01-19 | 2024-03-29 | 阳泉市广凯机械制造有限公司 | Top beam and hydraulic support and use method thereof |
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